close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3091291

код для вставки
May 28, 1963
T. CURZON
MEANS FORFACILITATING THE STARTING OFAN
INTERNAL COMBUSTION ENGINE
3,091,282
2 Sheets-Sheet 1
Filed Sept. 25, 1959
II
l2
2
3
/6
I
“im
, mm!“
we“.
4
‘
mmm
5
5 Figl
7
/0
//
m
l
I
Fig.2.
' May 28, 1963
-r CURZON
3,091,282
MEANS FOR FACILITATING THE STARTING OF AN
INTERNAL COMBUSTION ENGINE
Filed Sept. 25, 1959
2 Sheets-Sheet 2
i
3,091,282
Patented May 28, 1963
2
.
3,091,282
The nozzle above described is such that it can gasify
the liquid fuel admitted to the tube 4 and cause a
superheated gaseous jet to emerge from the tube at a
MEANS FOR FACILITATING THE STARTING OF
temperature of for example about 300° C._ By super
AN INTERNAL COMBUSTIQN ENGINE
Thomas Curzon, London, England, assignor to CAN. 5 heated is meant a temperature higher than the vaporisa
Limited, Acton, London, England
tion temperature of the fuel.
Filed Sept. 23, 1959, Ser. No. 841,740
‘The mode of use in a diesel type or like engine, is
2 Claims. (Cl. 158—28)
to provide a nozzle or nozzles as above described in the air
This invention relates to means for facilitating the start
ing of an internal combustion engine at low temperatures,
and is a continuation in part of Patent No. 2,965,164
which was ?led on October 10‘, 1958.
The objects of the invention are to enable liquid fuel
intake manifold of the engine at a position or positions
as closely adjacent as possible to the air inlet valve of
each engine cylinder, or pair of adjacent engine cylin
ders. When starting a cold engine the nozzle or each
nozzle is heated to effect the required gasi?cation of the
fuel supplied to the nozzle, the gasi?ed jet being discharged
to be admitted under the control of a valve to‘ the interior
of a gasifying tube through an inlet portion thereof only 15 into the air in the manifold and carried thereby to the
associated cylinder or cylinders.
after the tube has been heated to a predetermined tem
It will be understood, that the normal supply of fuel
perature by an electrically heatable coil mounted on and
to each engine cylinder is effected in the usual manner
surrounding the tube, and also to enable the fuel admitted
by a fuel injection nozzle or nozzles supplied by a pump.
to the interior of the tube to be e?ectively superheated
The
amount of gasi?ed fuel supplied by the nozzle or
20
and gasi?ed before ?owing from the interior of the tube
nozzles above described is such that it can convey suffi
through the end thereof remote from the said inlet portion.
cient heat to facilitate the normal ignition of a cold fuel
In the accompanying drawings:
and air mixture to the engine.
7
FIGURE 1 is a longitudinal section illustrating one
The example shown in FIGURE 2 differs from the
form of nozzle embodying the invention.
FIGURES 2 and 3 are similar views to FIGURE 1 25 example illustrated by FIGURE 1 in that the valve
closure member 7 has the form of a ball in contact with
illustrating alternative forms of nozzles embodying the
the adjacent end of the stem 8, the opposite end of the
invention.
stem 8 has formed on it a head 9' in screw-thread engage
The example of a nozzle in accordance with the inven
ment with the inner end of the gasifying tube 4, and the
tion as shown in FIGURE 1, comprises a hollow cylin
drical body part 2 adapted to be inserted in a hole in one 0 stem 8 has formed in it an ‘axial bore 17 which at the
end nearest to the valve closure member 7 communicates
side of the air intake manifold, and secured thereto by
with the interior of the tube 4 through ports 18 in the
a screw thread connection 3. Extending coaxially through
stem, and which at the opposite end is open so that gasi
the body part 2 is a gasifying tube 4 which at its outer
end is supported in and extends beyond the outer end of n ?ed fuel can flow from the interior of the tube through
the axial bore in the stem.
the body part.
In the example shown in FIGURE 3, the stem 8 has
The inner end portion of the tube 4 extends beyond
the inner end of the body part 2, the latter being shaped
formed on or secured to it a collar 9' in screw thread
to form an annular chamber 5 which surrounds a portion
engagement with the gasifying tube 4. To the heating
of the tube intermediate the ends thereof.
Within and adjacent to the outer end of the tube 4
is formed a valve seating 6 for a valve closure member
7 of ‘any convenient form.
‘The closure member 7 is
formed on one end of a stem 8 which is mounted co
axially within the tube 4, and which is supported at
its opposite end by a plug 14 in screw-thread engagement
with the inner end of the tube 4 so that the closure mem
ber 7 is normally held in contact with the seating 6.
In the plug 14, is formed a gas discharge ori?ce 15, and
the contiguous end of the stem 8 has formed thereon a
narrow groove or grooves 8a through which gas can flow
from the interior of the tube ‘4 to the discharge ori?ce
15. The internal surface of the tube 4 has formed on
it a helical groove 16 to increase the area over which
the said internal surface is exposed to the fuel admitted
to the interior of the tube. The tube 4 and stem 8 are
made of metals having different temperature co-e?icients
of thermal expansion, such that when heated between
ZOO-300° C. the closure member 7 is separated from the
seating 6 and permits the liquid fuel to pass into the
tube from a supply pipe attached to the outer end of the
tube.
To gasify the liquid fuel admitted to the tube 4,
heating of the fuel is eifected by an electrically conduc
tive wire or tape 10 coiled helically around the exterior
of the tube. One end of the wire or tape is secured to
the inner end of the tube and the other end of the wire
or tape is connected to a current supply terminal 11. Elec
trical insulation of the tape or wire is e?ected by discs 12
of insulating material secured to the outer end of the body
part.
Wire or tape 10 is secured one end of a supplementary
heating coil 19 which at its other end is secured to the
inner end of an extension 8a of the stem 8. The gasi?ed
fuel emerges from the tube 4 through passages ‘9a in the
collar and enters the interior of the coil 19. Here the fuel
mixes with the combustion air in the air intake manifold
of the engine, and the mixture is heated by heat de
rived from the coil 19.
The invention is not, however, restricted to the ex
amples above described, as constructional details may be
varied to suit different requirements. Further the inven
tion is applicable in essentially the same manner to petrol
or other engines in which the normal fuel is supplied
through a carburettor or vaporiser.
Having thus described my invention what I claim as
new and desire to secure by Letters Patent is:
1. Means for facilitating the starting of an internal com
bustion engine, comprising in combination a hollow cylin~
drical body part having at least one of its ends closed,
a liquid fuel gasi?er in the form of a tube which has
an inlet portion secured to the closed end of said body
part, and which extends through said body part in coaxial
relationship thereto, a fuel inlet valve mounted within
the inlet portion of said tube at a position adjacent the
5 closed end of said body part, and provided with a con
trolling stern which is contained in said tube, and which
is supported by the end ‘of said tube remote from said
valve, an electrically heatable coil mounted on and sur
rounding said tube, and at least one outlet whereby gasi?ed
and superheated fuel can flow from the interior of said
tube through the last mentioned end of the latter, said
3
3,091,282
tube and stem being made respectively of metals having
different coefficients of expansion such as will enable said
valve to open when said tube and stem are heated by
4
References Cited in the ?le of this patent
UNITED STATES PATENTS
said coil, and the internal surface of said tube being
1,451,434
Roesch ______________ __ Apr. 10, 1923
helically grooved to increase the area ‘over which said
surface is exposed to fuel admitted to the interior of said
1,459,667
1,730,115
Anderson ____________ __ June 19, 1923
Bristol ________________ __ Oct. 1, 1929
tube by said valve.
2,241,086
2,610,300
2,647,017
2,965,164
Gould ________________ __ May 6, 1941
Walton ______________ __ Sept. 9, 1952
Coulliette _____________ __ July 28, 1953
209,166
990,616
Austria _______________ __ May 2, 1957
2. Means according to claim 1, in which said steam
is provided with an axial bore open at the end remote
from said valve, and with ports establishing communica 10
tion between the interior of said tube and the other end
of said bore, said ports and bore forming the outlet
through which gasi?ed and superheated fuel can ?ow
from the interior of said tube.
Curzon ______________ __ Dec. 20, 1960
FOREIGN PATENTS
France ________________ __ June 6, 1951
Документ
Категория
Без категории
Просмотров
0
Размер файла
289 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа